diff --git a/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php b/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php
index dc4b6762b87a7..e026b42d41476 100644
--- a/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php
+++ b/src/Symfony/Component/HttpClient/DataCollector/HttpClientDataCollector.php
@@ -194,7 +194,7 @@ private function getCurlCommand(array $trace): ?string
         $dataArg = [];
 
         if ($json = $trace['options']['json'] ?? null) {
-            $dataArg[] = '--data '.escapeshellarg(json_encode($json, \JSON_PRETTY_PRINT));
+            $dataArg[] = '--data '.escapeshellarg(self::jsonEncode($json));
         } elseif ($body = $trace['options']['body'] ?? null) {
             if (\is_string($body)) {
                 try {
diff --git a/src/Symfony/Component/HttpClient/Tests/DataCollector/HttpClientDataCollectorTest.php b/src/Symfony/Component/HttpClient/Tests/DataCollector/HttpClientDataCollectorTest.php
index 863c91d3d68db..1eee2fdce1263 100755
--- a/src/Symfony/Component/HttpClient/Tests/DataCollector/HttpClientDataCollectorTest.php
+++ b/src/Symfony/Component/HttpClient/Tests/DataCollector/HttpClientDataCollectorTest.php
@@ -307,6 +307,8 @@ public function __toString(): string
                         'json' => [
                             'foo' => [
                                 'bar' => 'baz',
+                                'qux' => [1.10, 1.0],
+                                'fred' => ['<foo>',"'bar'",'"baz"','&blong&'],
                             ],
                         ],
                     ],
@@ -317,14 +319,10 @@ public function __toString(): string
   --url %1$shttp://localhost:8057/json%1$s \\
   --header %1$sContent-Type: application/json%1$s \\
   --header %1$sAccept: */*%1$s \\
-  --header %1$sContent-Length: 21%1$s \\
+  --header %1$sContent-Length: 120%1$s \\
   --header %1$sAccept-Encoding: gzip%1$s \\
   --header %1$sUser-Agent: Symfony HttpClient/Native%1$s \\
-  --data %1$s{
-    "foo": {
-        "bar": "baz"
-    }
-}%1$s',
+  --data %1$s{"foo":{"bar":"baz","qux":[1.1,1.0],"fred":["\u003Cfoo\u003E","\u0027bar\u0027","\u0022baz\u0022","\u0026blong\u0026"]}}%1$s',
             ];
         }
     }